Now OnePlus has started to rollout Android Oreo for OnePlus 5T across the globe. The update weighs around 1688MB in size and brings number of New features and bug fixes.
Update brings New design for Quick settings and mitigation for Spectre-style attacks. Launcher has been updated to V2.2 and Gallery to V2.0.
Upgraded Android version to Oreo(8.0)
New design for Quick Settings
General bug fixes and improvements
Applied CPU security patch: CVE-2017-13218
Updated Launcher to v2.2
Updated Gallery to v2.0
Updated Weather to v1.9
Updated File Manager to v1.7.6
OTA will be incremental and the OTA will be available for a small percentage of users today. Broader rollout in a few days.